HIARCS Chess Explorer Pro review: scores and evidence
HIARCS Chess Explorer Pro is Windows/macOS software for analysis (HIARCS 15 engines, post-game blunder checking), game databases (PGN/ChessBase import up to 30M games), opening trees and per-player statistics. It has no Lichess/Chess.com connection, no exercises and no courses.
Read on August 30, 2026 from the service’s public pages — every score cites the page read.
Overall score
2.7/ 10
Rank
50/ 128
Languages
9
Listed price
€74.95 one-off purchase (hiarcs.com, v1.5.2 April 2026); rule: perpetual licence, no annual price.
What the service is
HIARCS Chess Explorer Pro is published by Applied Computer Concepts Ltd, an English company established in 1991; the software is designed and developed by Mark Uniacke (hiarcs.com home page). According to Wikipedia the HIARCS engine dates back to 1980, the Chess Explorer interface has shipped with the engine since HIARCS 14 (August 2012), and the Pro edition was first released on 5 January 2022 (hiarcs.com news page). The Windows and macOS program combines a game database (PGN import, ChessBase formats, up to 30 million games), HIARCS 15 engines for analysis and blunder checking, multi-source opening trees, a player explorer, a playing mode against the engine with handicap levels, and a guess-the-move mode on database games. It is sold as a one-off purchase from £62.45 / €74.95 / $79.95, with 1.x updates free for existing customers; a Standard edition costs €49.95. The pages we read mention neither a trial version nor a refund policy. The software does not connect to Lichess or Chess.com accounts, offers no exercises or courses, and has no mobile version (the HIARCS Chess iOS apps are separate products). The interface is available in nine languages, including French.
Activity history
- 2026-044 April 2026: HCE Pro v1.5.2, much faster opening and closing of multiple databases (tested with over 100 databases open in tabs), free update for customers.
- 2025-1115 November 2025: HCE Pro v1.5 with the MasterBase25 database, the 2025 opening books and dark mode on Windows 11.
- 2025-021 February 2025: HCE Pro v1.4 with the HIARCS 15.4 engine, announced as 50 ELO stronger than HIARCS 15.
- 2024-031 March 2024: HCE Pro v1.3.3 with the HIARCS 15.3.1 engine; supports Windows 10/11 and macOS 11 or later.
- 2023-085 August 2023: HCE Pro v1.2.1, a major update listed on the PC download page.
- 2022-0510 May 2022: HCE Pro v1.1 with the stronger, multi-core HIARCS 15.1 engines.
- 2022-015 January 2022: initial release of HIARCS Chess Explorer Pro v1.0, described as a database, analysis and playing program.
- 2012-08August 2012: HIARCS 14 is sold for the first time with its own Chess Explorer interface on Mac OS X and Windows (Wikipedia).
The scores, evidence by evidence
Every score points to the page read and the fact found there. A fact documented nowhere is not credited: document it, then write to us.
APersonalized diagnosis
2.5A1 :2Importing your games (Chess.com, Lichess, PGN files)
https://www.hiarcs.com/ — batch import of PGN/HCE/EPD and CBH/CBV (30M games); no Chess.com/Lichess connection
A2 :1Automatic engine analysis of every game
https://www.hiarcs.com/ — "check games for blunders" launched on demand; no automatic analysis on import
A3 :1Recurring mistakes identified across all your games
https://www.hiarcs.com/chess-explorer-pro.html — Player Explorer: performance, favourite openings; no error named and counted
A4 :1Types of mistakes covered (tactics, strategy, endgame, time…)
https://www.hiarcs.com/chess-explorer-pro.html — "blunders, inaccuracies and improvements": tactical axis only
A5 :1Written explanation of each mistake
https://www.hiarcs.com/chess-explorer-pro.html — "Coach points out mistakes, shows move quality and hints": a label, no explanatory text
A6 :0Stated verification of the diagnoses (procedure, rates)
https://www.hiarcs.com/ — no mention
A7 :0Tracking each weakness over time
https://www.hiarcs.com/ — no evolution by period found
A8 :0Comparison with players of the same rating
https://www.hiarcs.com/ — no comparison
BOpenings
4.4B1 :2Building a personal repertoire
https://www.hiarcs.com/ — "build repertoire trees from database games" (free-form construction)
B2 :1Training the repertoire (drills, games)
https://www.hiarcs.com/ — browsable trees; no drill documented
B3 :0Spotting where you left your repertoire in your games
https://www.hiarcs.com/ — no deviation detection
B4 :2Verification of the lines taught (engine, practice)
https://www.hiarcs.com/ — sourced statistical trees + engine; no protocol
B5 :2Opening explorer and statistics
https://www.hiarcs.com/ — multi-source trees, MasterBase, tablebases; online database not mentioned
B6 :1Explanation of opening plans and ideas
https://www.hiarcs.com/ — moves, statistics and "advice"; no written plans
CTargeted training
0.7C1 :0Exercises drawn from your own games
https://www.hiarcs.com/ — no exercises
C2 :0Bank of tactical exercises (size, themes, rating)
https://www.hiarcs.com/ — no bank
C3 :0Endgame training
https://www.hiarcs.com/ — online tablebases (a tool), no training module
C4 :2Strategic and positional training
https://www.hiarcs.com/chess-explorer-pro.html — "guess the move feature… improve your tactical and positional play" on database games
C5 :0Training defense and alertness
https://www.hiarcs.com/chess-explorer-pro.html — no mention of defensive exercises
C6 :0Training calculation and visualization
https://www.hiarcs.com/ — none
C7 :0Difficulty matched to your real level
https://www.hiarcs.com/ — no exercises to rate
C8 :0Spaced repetition (named algorithm)
https://www.hiarcs.com/chess-explorer-pro.html — no mention of spaced repetition
C9 :0Personalized training plan
https://www.hiarcs.com/chess-explorer-pro.html — no mention of a training plan
DPrice and value
4.2D1 :0What the free plan actually lets you do
https://www.hiarcs.com/ — no free version ("Trial/Demo: not mentioned")
D2 :2Annual price of the full plan
https://www.hiarcs.com/ — €74.95 one-off
D3 :1Commercial transparency (price shown, trial, cancellation)
https://www.hiarcs.com/ — price displayed; neither trial nor refund found (FAQ/shop pages 404)
D4 :2Number of paid tiers (how simple the offer is)
https://www.hiarcs.com/chess-explorer-pro.html — "Prices from £62.45 / €74.95": one-off purchase, variants not detailed on the page
EEvidence and transparency
2.5E1 :0Published evidence of effectiveness
https://www.hiarcs.com/ — no data
E2 :0Chess verification of the content (positions, lines)
https://www.hiarcs.com/ — no editorial content to verify; no procedure
E3 :2Transparency of the method (algorithms, code)
https://www.hiarcs.com/ — engines named (HIARCS 15, up to 3450), multi-engine
E4 :1Marketing claims that can be checked (no overselling)
https://www.hiarcs.com/ — "Revolutionary multi-source chess trees" (superlative)
FContent and method
0.7F1 :0Courses organized by rating level
https://www.hiarcs.com/ — no courses
F2 :0Course authors named and titled
https://www.hiarcs.com/ — no content author
F3 :0Content formats (text, video, interactive)
https://www.hiarcs.com/ — no teaching content
F4 :0Published method of progression
https://www.hiarcs.com/ — none
F5 :1How often the content is updated
https://www.hiarcs.com/ — v1.5.2 April 2026 (< 12 months, > 3 months)
GPlaying and practice
1.7G1 :0Playing humans online (pool, anti-cheating)
https://www.hiarcs.com/ — no online play
G2 :1Realistic artificial opponents
https://www.hiarcs.com/ — handicapped engine from beginner to 3300+ ELO
G3 :1Replaying one specific position against the machine
https://www.hiarcs.com/ — play from any database position (entered by hand)
G4 :0Tournaments and organized competition
https://www.hiarcs.com/ — none
HExperience and accessibility
3.3H1 :0Platforms available (web, iOS, Android, desktop)
https://www.hiarcs.com/ — Windows + macOS only (desktop)
H2 :0User ratings and reviews (stores, press)
https://www.hiarcs.com/ — no store rating; no third-party review consulted
H3 :2Interface languages available
https://www.hiarcs.com/ — "Supports: English, Dutch, French, German, Italian, Polish, Portuguese, Russian and Spanish" (9)
H4 :0Accessibility (keyboard, screen reader)
https://www.hiarcs.com/ — no mention
H5 :3Offline use and known incidents
https://www.hiarcs.com/ — local software (offline engines and databases)
IPreparation and study
5.8I1 :2Preparing for a named opponent
https://www.hiarcs.com/chess-explorer-pro.html — "Player Explorer: reports on players… favourite openings", "Automated repertoire summaries… for players"; no weakness suggested
I2 :1Annotating and sharing games (studies)
https://www.hiarcs.com/chess-explorer-pro.html — "notation with variations, comments, symbols, diagrams", PGN/PDF/EPUB/HTML export; no sharing by link
I3 :1Entering a game played at a club (photo, scoresheet)
https://www.hiarcs.com/chess-explorer-pro.html — position entry ("start positions") + "Millennium electronic board support"; no photo recognition
I4 :3Searching your games (filters, position)
https://www.hiarcs.com/chess-explorer-pro.html — "Fast searching for players, openings, events, material, pawn structure and positions"
JHuman coaching and community
2.5J1 :0Access to human coaches
https://www.hiarcs.com/ — none
J2 :1Size and activity of the community
https://www.hiarcs.com/ — hiarcs.net forum; activity not measured
J3 :0Tools for trainers, clubs and schools
https://www.hiarcs.com/ — none
J4 :2Engagement mechanics (streaks, virtual currency, reminders)
https://www.hiarcs.com/ — no gamification and no sales pressure
KPersonal data and interoperability
3.3K1 :2Exporting your data (games, repertoire)
https://www.hiarcs.com/ — PGN/EPD formats read and written (game export)
K2 :0Protection of personal data (GDPR, hosting)
https://www.hiarcs.com/ — no privacy policy found on the pages consulted
K3 :1Public API and source code
https://www.hiarcs.com/ — PGN + UCI engines; no API
Also, outside the grid
Features found that no criterion measures. They do not count towards the score.
- Millennium electronic board
- Reads ChessBase databases (CBH/CBV/CTG)
- PDF / EPUB / HTML export
- Engine-versus-engine matches
- Live game following
Sources consulted
Services with a similar profile
The three services whose category profile is closest — a distance over the eleven scores, computed, never chosen.